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【判断题】
第三代战斗机所采用的操纵系统为机械操纵系统。A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【简答题】基尔霍夫第(__)定律又称电压定律,规定环绕的正方向,并并标定电流后,“电阻上的电压降与电动势之和等于零”中必然规定了电流与环绕方向一致该电阻的的电压降为正,环绕方向从电源的(__)极进入,电动势为正,环绕方向从电源的(__)极进入,电动势为负。
【单选题】As the mountains were covered with a ______ of cloud, we couldn't see their tops.
A.
coating
B.
film
C.
veil
D.
shade
【单选题】We ran to the trees, ___ we couldn't see any more monkeys.
A.
but
B.
so
C.
and
D.
for
【单选题】It was so dark that we couldn't see each other 's faces .
A.
宾语从句
B.
定语从句
C.
状语从句
D.
同位语从句
【单选题】We couldn't see _____ because the light in the room was poor. [ ]
A.
enough clear
B.
clear enough
C.
enough clearly
D.
clearly enough
【简答题】电动势的单位与电压单位相同,也是伏特(V)。电动势是一个标量,同电流一样也有自己的规定方向,即规定:自负极通过 ________ 到正极的方向为电动势的方向。
【单选题】We couldn't see_____ because the light in the room was poor.
A.
enough clear
B.
enough clearly
C.
clearly enough
【单选题】It was do dark that we couldn't see each other 's faces .
A.
宾语从句
B.
定语从句
C.
状语从句
D.
同位语从句
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